Creating forms at runtime 1

[rogerte]

I have just changed to Delphi 7 from Delphi 4, and have run into a small problem. Won't accept code to create a form (derived from an existing form) at runtime.

One application (MDI style) use a form that is created at design time, it is in the Projects Uses declaration, but is not created at start up. When I need to use it I create in in a procedure as:
fNewForm := CustomerForm.create(Application);
fNewForm.show;

and in the form I have a release statement.
This is to allow the operator to have many customer (well limited to 4 actually by the program design) details on screen at the same time, and to work on each independently.

Only problem is - won't compile under Delphi 7 - doesn't like the create method.

Can't see how to do it in the help

Can anyone point me in the right direction - and does anyone know if this is cobvered in any of the books on Delphi 7?

Many thanks

Roger

 

[towerbase]

What is the error message produced by the compiler? The actual message should give a clue to the problem.

Andrew

 

[Svanhooft]

hi,

try this methode:

with TCustomerForm.Create(Application) do
try
Show;
finally
Free;
end;

I donn't know exactly all the differences but I think that the T in front of CustomerForm does the trick. In this case it a class.
so your function should read

fNewForm := TCustomerForm.create(Application);
fNewForm.show;


Steph [Bigglasses]

 

[rogerte]

Svanhoost

I think you might be on the right track with this, because the error message has changed from "Create is not a method" to "Undeclared identifier".

I have "Used" the base form in the project dpr. SHould it be used in the shell form's forms declaration (ie the MDI main form, on which the fNewForm is displayed?

 

[rogerte]

Svanhoost

You were absolutely correct in your reply - the other problem was caused by a spelling mistake that the compiler didn't pick up on!

Thanks a lot

Roger